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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-33.707709
Energy at 298.15K 
HF Energy-33.707709
Nuclear repulsion energy66.304239
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3979 3587 6.00 99.47 0.71 0.83
2 A 3838 3460 2.22 230.88 0.09 0.17
3 A 3368 3036 0.00 139.71 0.44 0.61
4 A 1892 1705 2.22 90.86 0.18 0.31
5 A 1811 1632 12.37 12.79 0.74 0.85
6 A 1444 1302 0.40 28.31 0.33 0.50
7 A 1356 1222 1.11 12.88 0.74 0.85
8 A 1077 971 23.55 9.24 0.41 0.58
9 A 1050 947 89.36 5.02 0.41 0.58
10 A 592 534 47.93 11.05 0.27 0.43
11 A 494 445 506.06 2.88 0.13 0.23
12 A 334 301 34.30 2.58 0.67 0.80
13 A 230 207 31.47 3.00 0.75 0.86
14 B 3979 3587 17.76 29.23 0.75 0.86
15 B 3837 3459 19.01 31.34 0.75 0.86
16 B 3370 3038 88.01 0.89 0.75 0.86
17 B 1819 1640 128.15 2.68 0.75 0.86
18 B 1489 1343 4.80 0.86 0.75 0.86
19 B 1248 1125 226.72 0.18 0.75 0.86
20 B 1173 1057 8.36 6.87 0.75 0.86
21 B 923 832 30.25 31.88 0.75 0.86
22 B 446 402 315.46 2.58 0.75 0.86
23 B 329 296 3.76 0.77 0.75 0.86
24 B 123 111 227.45 0.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20100.7 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 18118.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/CEP-31G
ABC
1.46018 0.12952 0.12022

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.322 0.596 0.037
C2 -0.322 -0.596 0.037
N3 -0.322 1.862 -0.070
N4 0.322 -1.862 -0.070
H5 1.401 0.643 0.044
H6 -1.401 -0.643 0.044
H7 -1.304 1.890 -0.246
H8 1.304 -1.890 -0.246
H9 0.043 2.618 0.469
H10 -0.043 -2.618 0.469

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35511.42362.46061.08002.12202.09622.68792.08613.2639
C21.35512.46061.42362.12201.08002.68792.09623.26392.0861
N31.42362.46063.77882.11262.73020.99824.09210.99784.5210
N42.46061.42363.77882.73022.11264.09210.99824.52100.9978
H51.08002.12202.11262.73023.08262.99162.55142.43383.5921
H62.12201.08002.73022.11263.08262.55142.99163.59212.4338
H72.09622.68790.99824.09212.99162.55144.59141.68994.7351
H82.68792.09624.09210.99822.55142.99164.59144.73511.6899
H92.08613.26390.99784.52102.43383.59211.68994.73515.2372
H103.26392.08614.52100.99783.59212.43384.73511.68995.2372

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 124.612 C1 C2 H6 120.834
C1 N3 H7 118.849 C1 N3 H9 117.914
C2 C1 N3 124.612 C2 C1 H5 120.834
C2 N4 H8 118.849 C2 N4 H10 117.914
N3 C1 H5 114.395 N4 C2 H6 114.395
H7 N3 H9 115.700 H8 N4 H10 115.700
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.184      
2 C -0.184      
3 N -0.617      
4 N -0.617      
5 H 0.203      
6 H 0.203      
7 H 0.302      
8 H 0.302      
9 H 0.296      
10 H 0.296      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.752 1.752
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.168 -1.908 0.000
y -1.908 -21.387 0.000
z 0.000 0.000 -29.405
Traceless
 xyz
x 5.228 -1.908 0.000
y -1.908 3.400 0.000
z 0.000 0.000 -8.628
Polar
3z2-r2-17.255
x2-y21.219
xy-1.908
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.641 0.717 0.000
y 0.717 7.971 0.000
z 0.000 0.000 2.824


<r2> (average value of r2) Å2
<r2> 83.775
(<r2>)1/2 9.153